Improvement in boiler-furnaces



y WILLIAM ALLENSWOETH, on TROY, 01110.

IMPROVEMENT IN BoiLER-FURNAcEs.

specieationformxng part of Letters Patent No. 159.138, dated January 2 6, 1875; application tiled October 12, 1874.

l To all whom ztmag/ concern: Y l Kis a pipe, which carries exhaust steam 'i i i. 'Be it known that I, W'ILLIAM .AILLENS- from theeugine, and which, travcrsingthe i WORTH, of Troy, Miami county, Ohio, have furnace-Wall, enters and passes alongthe ininvented a new and useful Improvement in' teriorot the fire-chamber by two branches, .Y Steam-Boiler Furnaces, of which the follow- L L', which, again emerging` from the said ing is a specification: i l chamber, terminate in .a series of nozzles, The object of my improvement is to secure M, that enter the pipes I l', and, bending a more perfect combustion 'ivithin the fur., rectangularly, occupy an axial position in the nace, and is effected by means of a series of. branches J'J, one nozzle in each branch. l passages within the bridge-wall, having their In places Where the exhaust steam is apinlets directed toward the tire-place, so as to propriated to other uses the `forced draft in receive the heavier and, more carbonaceous the nozzles M may' be produced by fans dis* i products of combustion, which passages com- 4charging air into the pipe K, or live steam if* munieate, by side ducts or pipes, with a series may be turned in from the boiler direct, i of nozzles, ivhich discharge into the furnace The operation of my attachment is as fol- I on both flanks,-their draft being assisted by lows: The re having` been started inthe furmeans `of a series of `.steamjets, one within nace, and the. engine being set to work, the i each nozzle, which `jets may be supplied steam which escapes from the engine passes, either from the exhaust-pipe or with live by pipe K L L and nozzle M, into the steam by communication with the `boiler branchesJ J', and by so doing causes a draft direct. from the Tirechamber into the flaring inlets The effect of this attachment is to 'produce F of' the chamber Gr within the bridgewall an intensely incandescent arch Votilaue enand thence through pipes I I' and branches tir-ely over the mass of fuel in the iire-bed- J J' into the furnace on both flanks. in'which the combustible residue are com- Thepassage ofthe exhaust'steam,hymcans plctely consumed-and, being highly heated of the pipes L L', through theA heart ot' the and volatilized, escape over the top ot' the furnace causes said steam to become .highly bridge-wall into the flue in a nearly transsuperheated, and materially conduccs to its parent or smokeless condition. effectiveness.

In the accompanying drawing', Figure l is I elailn as newr and ot' my inventionm a'part-ially sectionized side elevation of a As animprovementinsteam-boiler furnaces, steam-boiler furnacel provided with my imthe chambered b1idge-\vall G, having front provement. Fig. 2 is a section in the line perforatious F, and communicating, by end X X. Fig. 3 is a- Seetion in the line Y Y. passages H H', slde pipes I l', and branch Fig. 4 is a perspective view oth a portion of pipes J J', with both Hanks oi' the lire-chamthe apparatus detached from the furnace. her, in'combinatlon with pipe li, connected A represents the furnace wall; B', viireby branches L L', traversing the heart ot the place;- U, grate, and I), boiler, all of which furnace, with nozzles M placed within the parts may be oi ordinary or any suitable branch pipes J, for conducting superheated T form. My bridge-wall E has a series oi." ilarexhaust steam, as and for the purpose set ing apertures, l, which enter a common forth, the whole arranged to operate within clnunber,-.G, within said ivall. This chamber the fire-chamber, substantially as descr' communicates, by passages 1I ll', with pipes In testimony of which invention l hereunto l I', which, bending rectangnlarly.tbr\vard, set my hand.

.1 occupy a horizontal position just oiitside of r v ,.1

g and parallel with the wall ot' the furnace. w Aml OIIH *i A scriesof branches, J J', exteinling from Attest:

" pipes l l', pass through the furnace-wall and GEO. II. KNIGHT,

enter the nre-chamber on opposite ilanks. 0.1). lAYLoit. 

